Attachment for ovens.



L. D. STEWART).

ATTACHMENT FOR OVENS. APPLICATION Flix-:D 1A-N..22.1915.

Patentd Sept. '1L-191'?.

@vm/imam@ LOUISE D. STEWARD, OF BOISE, IDAHO.

ATTACHMENT FOR OVENS.

rasaese.

Specification cf Letters Patent.

Patented Sept. l1, i991?.

Application led January 22, 1915. Serial No. 3,753.

is more particularly designed for use in connection with domestic ovens.

The object of the invention is to provide a movable shelf for theinterior of the oven so that the articles contained thereon may beshifted to different parts of the oven to regulate the cooking thereof.

A further object is to Provide means eX- terior of the oven for movingthe shelf to various points within the oven to modify the oven space byincreasing or decreasing the size of the heating space in which thearticle is being cooked, also for positioning the shelf adjacent thefioor of the oven or near the roof thereof.

And a further object is to provide means for retaining the shelf in itsadjusted position.

Other objects and advantages will be hereinafter more fully set forthand pointed out in the accompanying specification.

In the accompanying drawing which is made a part of this application,

Figure 1 is a vertical longitudinal sectional view through a kitchenrange showing one form of the shelf and its attachment applied thereto;i

Fig. 2 is a vertical transverse sectional view thereof as seen from line2-2 of Fig. l;

Fig. 3 is a similar view of a modified form; Y

Fig. l is a detail elevation partly in sec tion, of one form ofadjusting mechanism for the shelf, and

Fig. 5 is a detail plan view of the means employed for positivelyretaining the shelf in its adjusted position.

Referring to the drawings, in which similar reference numerals designatecorre sponding parts throughout the several views 1 denotes the rangeproper which may be constructed in any' suitable manner, and 2 indicatesthe oven therein, the door 3 of the oven preferably having a bulgedportion 4.

Rotatably mounted within the oven 2 and extending through the rear wallof the oven and the rear wall of the range, is a shaft 5, said shaftbeing preferably positioned adjacent the upper portion of the oven andnear the rear side wall thereof. Fixedly secured to the shaft 5 andadapted to rotate therewith are sprocket gears 6, one gear being placedadjacent the rear wall of the oven and one adjacent the front wallthereof, and cooperating with said sprocket gears are similar sprockets7 which are rotatably mounted upon stub-shafts mounted in the frontendrear walls ofthe oven and adjacent the edge of the oven having the doorthereon, the sprockets G and 7 being conf nected with each other andcaused to rotate in unison by means of sprocket chains 8 so that whenthe shaft 5 is rotated, the sprockets 7 will be simultaneously rota-tedwith the sprockets 6. Fixed to the shaft 5 and in juxtaposition to thesprockets 6 are arms 9, while a similar pair of arms 10 are attached tothe sprockets 7, the lower ends of said arms being pivotally secured toa. shelf ll, said shelf being constructed in the usual or any preferredform and employed for supporting the articles being cooked.

As shown in Figs. l and 2, the arms 9 and 10 are of such length that theshelf ll, when in its lowered position, rests in a plane at a pointsubstantially half the height of the oven, but as shown by dotted linesin Fig. 2, the shelf can be positioned adjacent the roof of the oven byrotating the shaft and to facilitate the operation of the shafts andparts attached thereto, from the eXte rior of the oven, a crank 12 isattached to the projecting end of the shaft. The shelf 1l is held in itsadjusted position through the medium of the spring-pressed latch 13carried by the crank 12 and a suitable rack 14 attached to the rear wallof the range, the latch being so positioned that it will be releasedfrom the rack when the handle portion of the crank is grasped to operatethe same, and when the shelf has been placed in proper position, thereleasing of the han dle of the crank will likewise release the latch sothat it will again be moved intov engagement with the rack bar and willhold the crank against further rotation.

By properly bulging the door 3, the shelf may be moved to its elevatedposition adj acent the roof of the oven without opening the door.

In the form shown in Fi g. 3 of the draw ing, the sprockets G and 7 aredispensed with and the arms 9 and 10 are made of such length that whenthe shelf l1 isin its lower- 5 most position, it will rest adjacent theHoor of the oven, the operation of the parts for elevating the shelfbeing similar to that shown' in Figsn l and 2, except that the movementsof the arms 10 are regulated by the movements of the arms 9 which latterarmsA are fixed to the shaft 5.

This form of construction is `,primarily adaptable for ysupporting andhandling heavy articles, andv asshown by dotted lines inA Fig. 3, Ytheyarticles may befmoved to a point *Wherevtheyf can be removedfrolnthe`shelf-or placedthereon, as the lengths ofthe larms 9" and 10. Karegsuchas to. dispose a portion offthe shelf a distance .beyondthe openifingfinthe oven.

In Fig. 4 off the drawing, the construction I'thereinf shown'embodiesboth features vof the `device previously described in that the arms .15.arel substantially of the same length as nthe arms 9 and v10, andcoperating therewith; arefhollow sleeves 1(3,thevlower ends v of'which;are A pivoted` to i the Y shelf as:` in the other ,.forms.

*Withgthis form-of;4 device,1 the sleeves may betelescoped with the arms'15 `andfthe shelf lcarriedfin thelV same relative-position .as the.formfshown in Fig..2, or `by lowering the sleeves their full distance,-theshelf will be disposed in, the same relative-position asin `Eig. 3,-the sleeves being heldv in their ad- `justed.positions on the arms inany sui-table manner as by set screws 17. `Itwill` befun- `Vderstood, ofcourse,ithat the-sleeves 16.; may be adjusted to any point upon thevarms l5, .thus disposing the shelf at any required .height Withintheoven.

By suspending the shelf in the lmanner shown, it will be readilyseenthat it can be quickly disposed out .of- `operative Y position -sothat the full'capacity ofthe ovenfcanbe used,.or moved to increase or`decrease Vthe .heating space aboveor below thegshelf, as occasion mayrequire, and without. opening the oven door.

In this manner the heat may be uniform throughout the oven or it may beincreased inparts thereofby manipulating the position of the shelf asset forth.

I claim:

1. In combination with an oven, a shaft journaled in the side walls ofthe oven near `thetop,` afvpair ofnormally depending arms secured tosaid shaft, a pair of stub shafts also journaled in the side-.wallsofthe VovenV .nearzthe top and each carrying a normally .i dependingarm, a shelffpivotally secured to ltheflower-ends of said pairs of arms,and

-meansxconnected to theshaft totmoveithe `l3.Am.attachment for.ovenszcomprising y:the combination with ashelf, ofaslflaft ex-:tendingy through` the oven, afgpjair -ofsprockgets fined.,l to saidshaftasarmsfalso "Xed' to -saiclshaft yadjacent said sprockets,y asecondset of arms rotatably. mountecton the walls of ftheT oven, sprocketsfixed lto; said arms, y sprocket f Chains connecting; said sprockets tocause the second mentioned arms to rotate :witlnthe first mentionedyarms, lthe ends of :said arms being pivoted tol the shelf, means wherebyrotating motion may A.be imparted to saidffshaf-t, and means toaheld.the vshaft against casual rotation. Y Y y ,Inf testimony whereof Iaffix mysignature .in presence of. two witnesses..V

e LOUISE D.- SlEl/VARD. j lVitnesses: Y

l GEORGEv Simms, ,Y

Gr; STEWARD/4 :Gopiesof this. patent may Vbe obtained fortfive. centseach,bysaddressngthe ECpmmissoneu o1'- Patents,

.Washingtom D. C. v

